Trolley-pole head



Wilng s 66 s W. CHAMPLIN.

TROLLEY POLE HEAD. APPLICATION FILED MAY 20, I919.

Patented Mar. 16, 1920.

2 SHEETS-SHEET 1.

a'l uu /wtoz Warren Ch amplz'n W. CHAMPLIN.

' TROLLEY POLE HEAD.

APPLICATION FILED MAY 20. 1919.

1,334,226. Patented Mar. 16, 1920.

2 SHEETSSHEET 2- T Varren Chum v2 z'n WARREN CHAMPLIN, OF COAL CENTER, PENNSYLVANIA.

TROLLEY--POLE HEAD.

Specification of Letters Patent. Patented Mar. 16, 1920.

Application filed May 20, 1919. Serial No. 298,393.

To all whom it may concern:

Be it known that I, VYARREN GHAMPLIN, a citizen of the United States, residing at Coal Center, in the county of Washington i" moved therefrom in case the pole is broken,

the pole having associated therewith a harp formed from a sing e piece of material and within which may be engaged a wheel of any standard type.

An important object is the provision of a device of this character in which spring means is provided for resiliently urging the harp in one direction.

A further object is the provision of a pole head of this character provided with a cable receiving sleeve equipped with means where by the cable may be securely clamped in position to prevent any possible displace ment thereof in the event of the pole jumping the trolley wire.

A further object is the provision of a trolley pole head of this character which will be extremely simple, and inexpensive in manufacture, highly eilicient in service, durable in use and a general improvement in the art.

With the above and other objects and advantages in view, the invention consists in the details of construction to be hereinafter more fully described and claimed, and illustrated in the accompanying drawings in which Figure 1 is side elevation of the head in position upon a pole. r

Fig. 2 is a longitudinal sectional view therethrough.

liig. 3 is a front elevation.

Fig. i is a rear elevation.

l i g. 5 is a cross sectional view on the line 5-4) of Fig. 1.

Fig. 6 is a cross sectional view on the line i-6 of Fig. 1 and Fig. 7 is a perspective view of the harp detached and with the trolley wire engaging wheel removed.

Referring more particularly to the drawings the letter A. designates a trolley poleof the type employed upon electric locomotivcs used in mines. In carrying out my invention I provide a head formed as a body 5 having one end open and the other end closed as shown at 6 for abutting engagement upon the end of the pole A. Intermediate its ends, the body 5 is provided with a cut away portion 7 for lightening the device. The body 5 is secured upon the pole A by means of two screws 8 which are threaded through. the underside of the body 5 adjacent its open end and which are threaded a suitable distance into the pole. At its closed end, the body is somewhat reduced in size and is longitudinally slotted as shown at 9.

The harp is designated by the numeral 10 and comprises a substantially U-shaped member formed from a single piece of material. At one edge of its bight, the harp 10 is provided with an. inclined tongue 11 having a rounded end 12 disposed within the slot 9. The tongue 11 is secured within the slot by means of a headed pin 13 ex tending downwardly through the outer end of the body 5 and passing through a hole 14 in the tongue 11. At its lower end the pin 13 carries a ring 13 to which a rope may be attached. By means of this connection, the harp 10 is permitted to have limited pivotal movement in.respect to the bOdy 5. The harp 10 is maintained in its normal position alining with the body 5 by means of a U- shaped spring 15 which. has its bight portion passing through the closed end of the body and which has its arms 16 extending through slots 17 in the bight portion of the harp.

The arms 18 of the harp have their end portions reduced in width and bent inwardly as shown at 19 and through these end portions is engaged the axle 20 upon which is journaled the usual wheel 21.

In order to provide rope attaching means, the body 5 has formed thereon at its open end a sleeve 5.2.2 through which the rope B is threaded and into which are threaded screws which extend angularly through. the sleeve and which engage the rope.

The device is used in. the same manner as an ordinary pole head but it will be observed that the pivotal connection of the harp with the pole head. permits the wheel 21 to follow the trolley wire around curves so that the danger of the trolley jumping the wire will be reduced to the minimum. It will also be observed that the provision of the U-shaped spring 15 is important as the resilience of the Spring will normally hold the harpin normal position alining with the poie, In

the event that the pole is broken it will be observed that this improved head ma be very quickly and easily removed there rom after these screws 8 are removed and may be as easily engaged upon a new pole. The de- Will be consequently economical in use, and it will be apparent that its simple constructionis such as to minimize the arrangemerit of the parts in use.

While I have shown and described the "the invention nor the scope of the subjoined claims.

I chin-1: 1. A pole head comprising a body having a socket engageable upon the end of a pole,

25 the outer end "of body being closed "for abutting engagement upon the end of the pole and being provided with a longitudinal slot, a harp associated with the closed end of said body and having a portion disposed Within said slot, a pivotal connection between said body and said portion of said harp, and a spring carried by the closed end of said body and engaging said harp for normally holding said harp in alinement with said body.

2. A polehead comprising a body having a socket engageable upon the end of a pole, the mater and of said body being provided with a longitudinal slot, a harp formed as a U-shaped member having an inclined tongue extending from one edge of the bight thereof, said tongue being disposed within said slot, a pivot bolt passing through said body and through said tongues, and a U- shaped spring having its bight extending through said end of said body and having its arms slidably connected with the bight portion of said harp.

In testin'iony whereof I afiix my si nature.

WARREN CHAM LIN. 

